Shock-absorber.



R. lLEPINE. SHOGK ABSORBER. PPLIOATION FILED Dro. 1o, 1909.

Patented Apr. 12,1910.

lll/r11 l l l l 1l llllllll/f/ WITH/8858 [NVE/WOR A TTU/ME Y ROBERT LI'NE, oF NEW Yon'x, Y.

snoek-masonera.

Y speication of Letters raient. application mea December 1o, '1909. serial No. ssaaic.

Patented Apr. 12, 1910.

Tb all whom it may concern:

Be it known that I, ROBERT LPINE, a citivzen of Russia, residin at New York city, Manhattan,- countya'n State of New York, have invented new and useful Improvements in Shock-Absorbers, of which the following is a specification.

provided with mytiinp'ro'ved shock absorber;

Fig, 2 a face viewof the absorber detached; Fig. 3 a section on line 3 3, Fig. 2; Fig. 4

a section' on line 1;4, Fig. 2, and Fig. 5l

a detail of part of one of the brake-carrying arms.

' The shock absorber comprises essentially a `pair of disks 10 provided with integral convergin arms 11 which are adapted to be pivotal y connected to the running -gear As shown, arms 11 are perforated near their free ends and are spaced by an interposed apertured plate 13, the -perforations serving for the accommodation Yof a flanged sleeve 14 that lturns on a bolt15 of running gear 12 and incloses a packing 16.` Intermediate disks 10 is located a'third disk 17 integral with an arm 18 fulcrumed to the body 19 of the car. The connection between this arm and body 19 is similar to the connectionbetween arms 11 and running gear 12. Thus the perfou rated end of arm 18 is flanked by a pair of perforated disks 20 adapted for the reception of a anged sleeve 21 having packing 22 and turning on bolt 23 of body 19.

To o posite sides of inner disk 17 are attached, by rivets 24, first brake-members 25. These members are shown to be made of annular form with outwardly turned flanges and inner bulges to form centrally located pockets 26. The second brake-members com rise annular shoes 27, made of wood, ruliJber or other suitable material and operatively connected to disks 10 by bosses 28 of such disks,-whichare sunk into said shoes. Within pockets 26 are received the heads 29'of a\ pairof screws 30 extending in opposite directions through the openings of brakemembersI 25, 27 and through correeach other or open.

` ment o sponding openings ofI disks 10. Screws 30 are so connected to disk 17 that they will be turned by a partial rotation of such disk relativelyrto disks 10. To. this' effect,- the nicks 31 of screw-heads 29 are 'adapted to accommodate keys 32 secured to disk 17. It is preferred that nicks 31 Hare toward both ends, (Fig. 5,) so that. there isa slight play between heads 29 and keys 32 for a purpose hereinafter described. Each screw 30 engages a nut 33 having an angular shank 34 which passes through angular eyes of a series of superposed perforated leaf springs 35, said springs bearing with their edges against disks 10 and beinglpreferably of.

the stellated form shown. l By setting nutsy 33the tension of springs 35 may be adjusted, so that in this way the pressure between brakeemembers 25, 27 is regulable. In order to' normally maintain the relative position between springs 35 and disks 10, the points of the former arecupped as at 36 to engage a corresponding bosses 37 of the latter. As

the angular eyes of springs 35 engage the angular -slianks 34 yof nuts 33, the locking of the springs against rotationvwilllikewis'e lock the nuts against rotation during the normal operation of the device. The consequence is that as screws 30 are turned in either one or the other direction, the nuts willI be moved either inward or outward along such screws. Screws 30 have ducts 38 for the reception of a lubricant introduced through openings 39 of nuts 33. A lubricant'may also be fed through a duct 40 of disk 17 into pockets 26. y

In operation, a jolting action of the car will cause arms 1-1, 18 to alternately approach each other'or close and recede from In this way, disk 17 will receive a slight rotation relatively to disks 10, so that screws 30 will correspondingly turn in their nuts '33. closing action of arms 11, 18, one of the screws 30, (lower screw, Fig. 3,) will draw its nut inward to gradually increase the tension of its spring 35 and thereby correspondin ly increase the frictional engageits brake-members 25, 27. Upon the o ening of armsll, 18, the other screw 30, upper screw, Fig. 3,) will draw its nut inward, so that the tension of the second sprin 35 and the frictional contact of the secon pair of brake-members 25, 27 is gradually increased: The result of the entire arrangement therefore is that the shock is absorbed with gradually increased resistance during the descent, as well as during the rebound of the car body, so that objectionable jolting is effectively prevented. By providing the slight play described, intermediate screw heads 29 and keys 82, the

' small regular vibrations of the car may sorber, thus take place Without actuating the shock abpreventing unnecessary Wear of the latter.

It is obvious that in lieu of connecting the screws to the inner disk and the nuts to the springs, the nuts can be connected to the inner disk while the screws engage the springs.

I claim:

l. A shock absorber comprising an inner arm, and a pair of outer arms, coperat-ing brake-members carried by the arms, a pair of springs locked to the outer arms, a pair of screws extending from Vopposite sides of the inner arm, and a pair of nuts which engage the screws and are locked to the springs.

2. A shock absorber comprising an inner arm, and a pair of outer arms having bosses, coperating brake-membersy carried by the arms, a pair of cupped springs that engage the bosses and'have angular eyes, a pair of angular nuts engagin said eyes, and a pair of screws that exten yfrom opposite sides of the inner arm and engage the nuts.

3. A shock absorber vcomprising' a .irst arm, first brake-members on opposite sides thereof, a pair of second arms, second brakemembers secured thereto, springs intiuencing the frictional engagement of the brakemembers, nuts engaging the springs, screws engaging the nuts, and keys on the rst arm that movably engage the screws.

4. A shock absorber comprising a first arm, a bulged first brake-member Isecured thereto and forming an intervening pocket,

a screw having a head that is received Within said pocket and is operably connected to the first arm, a second arm carrying a' second brake-member, a spring influencing said second brake-member, and a nut' engaging the spring and engaged by the screw.

Signed by me at New York city, (Manhattan,) N. Y., this Qthday of December, 1909.

ROBERT LPINE. 

